A broker procuring a purchaser able to give title to the property agreed on to be conveyed by him as part of the trade, on the day fixed to carry out the trade, is entitled to his commissions, though, at the time the trade was arranged, the purchaser did not have title thereto. Bavenscroft v. Chesmore (Iowa Sup. '06), 108 N. W. 465. See also Secs. 87, 154.